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QS-1
MVX 128 A VGA Matrix Switchers • Quick Start
PRELIMINARY
Installation
Step 1
Turn off power to the input and output devices,
and remove the power cords from them.
Step 2 — Inputs
a. Connect up to 12 high resolution
video inputs to the 15-pin HD
input connectors.
b. Connect up to 12 stereo or mono audio
inputs to the 5-pin captive screw connectors.
Step 3 — Outputs
a. Connect up to 8 high resolution
video devices to the 15-pin HD
output connectors.
b. Connect up to 8 balanced or unbalanced
stereo audio or mono audio devices to the
5-pin captive screw connectors.
Step 4 — RS-232/RS-422
If desired, connect a control system or computer
to the Remote RS-232/RS-422 port.
Step 5 — Power
Plug the switcher into a grounded AC source.
Defi nitions
Tie — An input-to-output connection.
Set of ties — An input tied to 2 or more outputs.
Confi guration — One or more ties or sets of ties.
Current confi guration — The currently active
confi guration (also called confi guration 0).
Global preset — A confi guration that has been
stored. One global preset can be assigned
to each input button. When a global preset
is retrieved from memory, it becomes the
current confi guration.
Front Panel Controls
Input and output buttons select inputs and
outputs. Input and output LEDs light to
indicate video and audio ties.
Input and output buttons also select presets.
Output buttons also toggle video and audio
mutes on and off in View-Only mode.
Input LEDs also display the selected output’s
volume.
Output LEDs also display the selected input’s
audio level.
Enter button saves changes.
Preset button selects:
Save Preset mode to save a confi guration as a
preset.
Recall Preset mode to recall a previously-
defi ned preset.
View button selects a view-only mode that
prevents inadvertent confi guration changes.
The View button also decrements the level
and volume. See Viewing and adjusting the
audio level on QS-2.
Esc button cancels selections in progress and
resets the front panel button indications.
The Esc button does not reset: the current
confi guration, the RGBHV and audio
selection, any presets, or any audio level
or volume settings. The Esc button also
increments the level and volume. See Viewing
and adjusting the audio level on page QS-2.
Quick Start — MVX 128 A VGA Matrix Switchers
Unbalanced Input
Tip
Tip
Sleeve
Tip
Sleeve
Balanced Input
Ring
Sleeve(s)
Tip
Ring
(high impedance)(high impedance)
Unbalanced Output
Tip
See caution
Sleeve
Tip
See caution
Balanced Output
Tip
Ring
Sleeve(s)
Tip
Ring
C Connect the sleeve to ground.
Connecting the sleeve to a negative (-)
terminal will damage the audio output
circuits.
RS-232 Function Pin Function
1
2
3
4
5
6
7
8
9
—
TX
RX
—
Gnd
—
—
—
—
Not used
Transmit
Receive
Not used
Ground
Not used
Not used
Not used
Not used
—
TX–
RX–
—
Gnd
—
RX+
TX+
—
Not used
Transmit (–)
Receive (–)
Not used
Ground
Not used
Receive (+)
Transmit (+)
Not used
RS-422
5
1
9
6